Tag: map

The information returned by the Mybatis query result set is encapsulated using a large Map to implement mapping without POJO classes and achieve the effect of corresponding values —–Mybatis framework

package com.powernode.mybatis.mappers; import com.powernode.mybatis.POJO.Car; import org.apache.ibatis.annotations.MapKey; import java.util.List; import java.util.Map; public interface CarMapper { //Query all Cars and return a Map collection //The Key of the map collection is the primary key value, and the map value is the Car object @MapKey(“id”) Map<Long,Map<String,Object>> selectMap(); List<Map<String,Object>> selectAllCar(); Map<String,Object> selectByIdGetMap(Long id); List<Car> selectByCarId(Long id); //There may be […]

The information returned by the Mybatis query result set uses ResultMap to implement the encapsulated POJO class—–Mybatis framework

<?xml version=”1.0″ encoding=”UTF-8″?> <!DOCTYPE mapper PUBLIC “-//mybatis.org//DTD Mapper 3.0//EN” “http://mybatis.org/dtd/mybatis-3-mapper.dtd”> <mapper namespace=”com.powernode.mybatis.mappers.CarMapper”> <select id=”selectById” resultType=”Car”> select id as id, car_num as carNum, brand as brand, guide_price as guidePrice, produce_time as produceTime, car_type as carType from t_car where id = #{id}; </select> <select id=”selectAll” resultType=”Car”> select id as id, car_num as carNum, brand as brand, guide_price […]

Message queue implements AB process dialogue; shared memory and semaphore set complete multi-process string flipping and output

Message queue implements AB process dialogue Requirements Process A first sends a sentence to process B, and process B prints it after receiving it. Process B then replies a sentence to process A, and process A prints it after receiving it. Repeat step 1.2 Shared memory and semaphore set complete multi-process string flipping and output […]

Use openlayers to create travel maps in vue3

Since I often went out to play in the first half of the year, I suddenly wanted to start a travel map blog. I remembered that I had been exposed to openlayers projects before, and I was too lazy to investigate other libraries. I just started using openlayers. Since github often fails to build, I […]

KdMapper extension implementation for Huawei (Phymemx64.sys)

1.Background KdMapper is a tool that exploits Intel driver vulnerabilities to load unsigned drivers without trace. This article uses other vulnerabilities (refer to “[Reprint] Using Signed Driver Vulnerabilities to Load Unsigned Drivers”) and make corresponding modifications to achieve similar functions. . Everyone needs to have a certain understanding of the KdMapper code. 2. Driver information […]

Summary of C++ map access elements empty, size, max_size, operator[], at, insert, erase, swap, clear, emplace, emplace_hint (206)

Introduction: CSDN blog expert, focusing on Android/Linux System, share multi-mic voice solutions, audio and video, codec and other technologies, and grow with everyone! Quality Column:Audio Engineer Advanced Series[Original information is being updated continuously… ] Life motto: There are never shortcuts in life, only actions It is the only cure for fear and laziness. For more […]

MapStruct from 0 to 0.5

MapStruct from 0 to 0.5 In the development process, entity class attribute mapping is often used. At the same time, for convenience, developers rarely write their own special attribute assignment tool classes. Simply use the BeanUtils tool class provided by Sprrng directly, and then the performance and field attribute assignment problems have always been criticized […]

Linux0.11 address mapping and sharing (HIT OS experiment 6)

Linux0.11 Address Mapping and Sharing HIT OS Experiment 6 This time I will record the entire process of completing Experiment 6, mainly to understand the memory management mechanism in Linux 0.11 and to implement a producer-consumer problem based on shared physical address memory. As usual, let’s talk about the experimental content first: Experimental content Experiment […]